fix improper use of whitespace in README.md files

The use of the markdown trailing whitespace to indicate
line break should NOT be done when the following line is empty.

This removes such improper use of whitespace in README.md files.

1994/dodsond1/README.md

@@ -4,7 +4,7 @@ Don Dodson
 AG Communication Systems  
 17239 N. 19th Ave. #1003  
 Phoenix, AZ 85023    
-US  
+US
 
 ## To build:
 

1994/dodsond2/README.md

@@ -4,7 +4,7 @@ Don Dodson
 AG Communication Systems  
 17239 N. 19th Ave. #1003  
 Phoenix, AZ 85023    
-US  
+US
 
 ## To build:
 

1994/horton/README.md

@@ -23,7 +23,7 @@ make all
 Running this program without enough args will very likely crash or do something
 else.
 
-## Try: 
+## Try:
 
 ```sh
 ./horton 3 2 1 0

1994/imc/README.md

@@ -5,7 +5,7 @@ Oxford University
 57 Wyndham Avenue        (home address)  
 Bolton  
 BL3 4LG  
-England  
+England
 
 ## To build:
 

1994/schnitzi/README.md

@@ -5,7 +5,7 @@ ISX Corporation
 1165 Northchase Pkwy, Suite 120  
 Marietta, GA 30067  
 US  
-<http://computronium.org/ioccc.html>  
+<http://computronium.org/ioccc.html>
 
 
 ## To build:
@@ -68,7 +68,7 @@ would be run as follows:
 
 ```sh
 schnitzi < info
-``` 
+```
 
 The program generates interesting results when its source file is
 used as input:

1994/shapiro/README.md

@@ -4,7 +4,7 @@ Andrew T. Shapiro
 CSES/CIRES University of Colorado  
 Campus Box 216  
 Boulder, CO 80309-0216  
-US  
+US
 
 
 ## To build:
@@ -52,7 +52,7 @@ this program. Note that this alt file is currently missing. See
 ## Author's remarks:
 
 The basic theme (pun) of this program is:
-    
+
 
 > "This time (everything) is not where it should be."
 >       ~~~~
@@ -82,7 +82,7 @@ main() returns random value to invocation environment, value type used
 inconsistently, value type declared inconsistently, function argument 
 (number) used inconsistently, function returns value which is always 
 ignored, function returns value which is sometimes ignored.
-All of which are harmless (famous last words). 
+All of which are harmless (famous last words).
 
 This may or may not work on non ASCII systems (I could not find one to
 test it on.)

1994/smr/README.md

@@ -4,7 +4,7 @@ Szymon Rusinkiewicz
 Massachusetts Institute of Technology  
 305 Memorial Dr., Room 005B  
 Cambridge, Ma  02139    
-US  
+US
 
 ## To build:
 

1994/tvr/README.md

@@ -4,7 +4,7 @@ Teemu Rantanen
 Helsinki University of Technology  
 Melkonkatu 5 A 8  
 00210 Helsinki  
-Finland  
+Finland
 
 ## To build:
 

1994/weisberg/README.md

@@ -5,7 +5,7 @@ University of Rochester
 Dept of Electrical Engineering  
 Computer Studies Bldg  
 Rochester, NY 14627  
-US  
+US
 
 ## To build:
 

1994/westley/README.md

@@ -5,7 +5,7 @@ Digi International
 1906 James Ave.  
 St. Paul, MN  55105  
 US  
-<http://www.westley.org>  
+<http://www.westley.org>
 
 
 ## To build: